Closure for preserving-jars.



C. BADER. CLOSURE PGR PRESERVING JARS. APPLIUATION FILED MAR. 21, 1908.

@l Patented Jan.' 19. 1909.

Juventa d -hun 'CARL BADER*7 0F CHlCAGO, ILLlNC'.

CLOSURE FOR PRE SERVING-J A RS Specification of Letters Patent.

Eatented. Jen. 1.9,

Application filed March 21, 1905'. Serial No. 422,491.

To all 't/,fzor/l it Imay concern:

Bc it known that l, CARL BADER, a citizen of the United Stetes, residing at Chicago, in the county of @ook end Starte .of illinois, have invented certain nev, ond useful improvements in Closures for Preserving-dni's, of which the following is e., specilieotion, reference being had therein to the accompanying dro-r ing.

My invention rele-tes to the ort of preserving perishftblc products, and hos .for its ob- Y, the'production of o.. closure for preserving jnrs end other vessels which vrill not only provide :t tight ecol but will positively exclude ull bacterie.. or micro-organisms 'which ore productive of ftwincntolion, mold, etc.

'Briefly stated, my invention comprises n vessel `with en opening having o sealing sur foce contiguous thereto, e oep iitted to seid opening', e. gasket interposed betvveen the oep sud see-ling surface, and one or more rings el' cotton secured to, the cop ond adepted when properly .sterilized to protect the seal from the ent LLnce of any micro-organisins or other injurious agencies. v

My invention illust-rated in the accompanying drawings whereinligure l is n vertical section of o jor havingl its cap provided with iny germ-proof seul.A a Figs. 2,

is s bottoni plan 'View of thecnp shown in 3 ond show modifications. Fig. 5

Fig. l, removed from the Fig. 6 is a detailed. sections-l view on en enlarged scolo showing. the inode of attaching the gasket and cotton rings.

Referring to lfig. i, A is the or having its mouth -m covered by the csp C. lAround the mouth of the jor the edges-ere molded or ground so os to produce seoling surfaces a end c, between which and the :[ionges ofthe cop l place the gasket G- of rubber or its equivalent, and. the tivo cotton rings R and R. The inethod of securing these parts is best shown in Fig. 6. Thev cop C is `provided with o. flange c, thc edge of which is bent `over inwardly it c so as to return upon itself all around the periphery of the cop. The gashet G if composed of rubber or 'libro-us rneteriel impregnated with rubber, muy be rendered sufficiently adhesive by heating to retoin its osition in the ongle c2 of the cop, or ir" not se f-a.dhesive, then it is secured in position by ineens of suitable cement. The cotton ring it is leid around beneath the ioaver edge of the goslret ond `held in that osition by the returned edge-c', rWhich-i forcibly clamped upor it all around. The

other ring R is similarly leid around the upper edge of the gesl-.ret and is held in that position by extending seid upper edge of the gasket over o ortion of the ring and causing it to edhere t creto either by softening its own substance or .by Ineens of cement.

In using the closure thus described, .the oep end rings are sterilized by being dipped in boiling Water or ex osed to the action of steani for s moment, Eefore being placed in position. Suitable vpressure being exerted upon the oep, the gasket G is compressedagainst the surfaces o a of the jor, and the cotton rings R R ore broughtinto the most intimate relation with these surfaces. The seal thus produced l have found to be irb-V solutely inipessoble for4 bacterie, consequently even though the pressure on 'the gasket be not uniform and seinev slight seep ege or entrance of eir tney result, nevertheless the contents of the jor receive protection, since the principal cause of deterioration in canned or reserved products is the access of bacteria t. ereto from the air; For Vexemple, in the case of canned fruit., the con muy be tight sealed by e rubber gasket under pressure, and yet deteriorate in e. relatively .short time, owing to the fact that the slightest infinitesimal leek ofthe geslret which ellows o. little air to seep through, permits entra-nce of bacteria .vith the oir. it should be also be noted that there is e tendency for the sulfur in the rubber of the gzisket to form sulfureted hydrogen. M y cotton rings prevent this as wel] es the entrance ol micro organisms, the inner ring li" obstructing the passage of hot fumes from the fruit to the gasket.

It is estimated that from 15% to 20% of the fruit and vegetables preserved-each year is lost because of defective seals of the jars or sulfureted hydrogen due to aotion of the hot fumes on the sulfur in the rubber. While this loss is distributed among the mechanical Qonners Who operete corn-v mercially on e. large scale, it does not cover the enormous aggregate losses of housewives who put up 'fruit and vegetebles for their own family consumption, and it would perhaps not be too much to say thaty 25 per cent. of the `annuel preservin in the country is lost. T* is can be save by exeluding the niicro-rrgenis1ns towhich .fer-

ltD

days, can be kept indelinitely wit lied upon to keep t have demonstrated that cherries, peas, and

the like, which under ordinary conditions;

would have mold formed on the tolp in a few ton rings pro er y sterilized. In such dein- `onstrations have employed the simplest means for producing the seal, simply bringing the product to a boil so as to sterilize it,

l0 and dipping the cap into hot water for the saine iurpose. The escape oln steam and gases due to the inward heat is sullicient to form a partial vacuum within the jar when cool, so that atmos heric pressure may bc rclic cap in position and to compress the gasket.

`in Figs. 2 and I modilimitions of the gasketl are shown,l which permit the enlargement of one of the rings, preferably the outer one H, as this is ofthe greatest iniportance as a protection against atmospheric organisms.

' 4InvFig. 4 l have shown the cap resting upon a horizontal sealing surface provided with a shoulder around which the gasket is stretched, the cotton being provided inside and outside lhereol' as b elore. The claniping effect in this case is due to an annular depression inside ol' thc edge ol` the cap. 0

am quite well aware that it has long been kiiownpto scientists that cotton in the loose and fibrous state is inipeivious to ferins and micro-organisms olvarious kinds; lint I believe l am the Iirst to practically applythis knowlcdgifto jai' closures.

Many changes and modifications may be made, as ,to shape and dimensions ol' the several' pit liave described without depart- -ifgl'romthe spirit of the invention and it 40 should be definitely understood that all sucli changes are contempla ted by` me as within the scope and purview of my claims.

Having thus described :ny/invention what I claim and desire to secllive by Letters Patsubstantially as described.

2. A. jar closure comprising a cap, an elastic gasket secured around and contiguous to the periphery of said cap, and a cotton ring i my cotsecured around said peri hery outside of the gasket, substantiaily as esci-i bed.

3. A jar closure comprising a cap, an elastic gasket secured around and contiguous to the periphery thereof, and two cotton rings, one secured around the outer edge of said gasket and the other secured. around the in- -ner edge thereof, whereby the passage of 1n- ]urious agencies from within and without is prevented, substantially as described.

4. lin combination, a jar having an opening and a scaling surface contiguous thereto, a cap shaped to cover the opening a gasket carried by the cai and adapted to be compressed upon sai( scaling surface when the cap is in position, and a cotton ring Secured upon the edge of the cap outside oi saidgasket and adapted to be compressed between the cap and the jar to exclude bacteria therefrom, substantiallyas described.

5. In combination, a jar having an open ing and a sealing surfa'ce contiguous thereto, a cap shaped to cover said o ening and having an intnrned clamping e ge, 4a gasket cooperating with the cap and sealing surface, and a cotton ring clamped around and beneath said edge of the cap outside of the gasket, in position to be compressed between the cap and jar, substantially as described.

(i. l'n combination, a jar having an opening and a sealing surfacecontiguous thereto, a cap shaped to cover said o ening, a gasket coperating with the cap an the sealing surface to produce a tight seal, and a cotton ring secured upon the cap around the inner edge of said gasket so as to be compressed between the cap' and sealing surface when the cap is in position, substantially as described.

7. In com'bination,-a jar havin an opening, a cap shaped to cover sai opening, a gasket secured tothe ca i, and two cottoii rings, one clam ed wit iin the outside edge of the cap, an the other secured beneath the inside edge of the gasket, whereby a seal is produced for the jar that will exclude bacteria and revent chemical action upon the gasket, su stantially as described. In testimony whereof I alx my signature in presence of two witnesse.

CARL BADER. Witnesses:

Jos. G. CAREY, Man KLIDEL. 

